Nope. It's your basic lightweight pulley.

 

like shadohh said (and the article expained in great detail), the crank pulley is NOT a good idea. so, you gain 5whp. just think of the vibration and forces acting on your crank and pulley at 6000 rpms. spend that $150 on a cai. or better yet, save up for a turbo. wink i would look for power elsewhere. tongue.gif

[ February 11, 2003, 01:57 PM: Message edited by: turbulence ]

 

Well let me ask everyone this, when you install a lightweight flywheel aren't you effectivley doing the same thing, just on the opposite side of the crank? I don't hear many people complaining about extra vibrations with the lightwieght flywheel.

 

Not exactly.

With a lightweight flywheel more work is put into it to balance it with the rotation of the engine. Rather than just stripping metal off of a flywheel to lighten it, you remove some and add some. This will keep it from rotating in an awkward pattern.

With the underdrive pulley they just take a chunk of billet and use a CNC machine to cut away all the metal they don't want. They aren't balanced at all. That's what damper pulleys are for.

 

Does this Crank Pully have a balancer.............

CLICK BELOW

http://www.ptuning.com/html/search-result....no&cmbYear=2001

 

Nope. Right now nobody makes a balanced pulley for the Beta engine.

Hopefully this will change soon. If there was more interest in it I would look into development of it.

 

I would be interested. I mean really, how much more would it take to make sure that the pulley is balanced upon manufacture? I'm sure there may be a price increase but if the SR pulley came in at $199.99 balanced, up $50.00 more from current price, I would definitley by it since i know at least the potential for engine damage has been reduced. Just seems wiser to do so. suicide

 

I went over this subject with Unorthodox for weeks before purchasing my U.D. pulley...lots of long e-mails back and forth. Their bottom line was that they had never received a complaint of mechanical failure in a car with their pulley...."not once" I believe they said, after thousands of sales. I grilled em pretty hard and asked lots of questions but they didn't back off. In any case, my pulley is approaching the 20,000 mile mark, and knock wood, no problems. The problems I had heard about through the grapevine turned out to be on V-8s with major HP...not one verified I-4. Not to say it hasn't happened, but it is usually described like " a friend of my brothers co-worker heard about a guy".... There was even an article that was quoted to me... again suggesting the problem was with more powerful cars...can't remember where the article appeared unfortunately.
I hope my pulley continues to perform well for me, because it's a mod that works year round, regardless of temperature or conditions...and I just like really like it.

 

I've had my pully for about 50k and not one problem. I think when you slap a pully on a higher HP motor it would affect it more. Everyone has an opinion on this. I think its a good mod.